centripetal force is not sqare law force??

 

assertion reason Q

 

stmt 1 :

a minimum non 0 force reqd to move  a  body on rough surface horizontal

 

stmt 2 :

force of friction always opposes motion on rough surface

 

is it rite?

in conservative force field work done on a particle in moving it from 1 pt to another independent of path chosen?

yes chetan

u r right pls send me solution.

X and Y are in feet.

area of piece #3

 

 

oops!

sorry owe you s sincere apology.

was distracted kind pf.

sorry!

ans it will take more time.

how?

a big lake 65 Km long

10 Km wide

area= 538.5 Sq Km.

depth 50 m

exacly 1 g sugar poured after some time 0.2 lit water taken out of lake. how many saccharose molecules found ?????

4 bags were to be weighed but the scale could weigh only wts excess of 100 kg. if bags were weighed in pairs and wts 103, 105, 106, 107, 109.

what is wt of lightest bag?

 

pls try.

 

A plane flies A to B and back const engine speed. will travel time b more with wind of const speed A to B than still air?

Ans:yes

 

how????